Add project/case study page

* Reset scroll to top on routing to case study page
  * Add ResetScrollMixin
  * Resets the scroll position to (0,0) on route change
  * http://emberjs.com/guides/cookbook/user_interface_and_interaction/resetting_scroll_on_route_changes/
* Add Marked for markdown parsing
* Add example images... as an example.
Set rendered markdown content in project route

Most likely a naïve implementation.
This probably should be done in the project controller.
¯\_(ツ)_/¯